The deflector is just a piece of plastic that redirects the fan down onto the TOP of the BLF881. I appreciate that the device will tolerate considerably higher temperatures but I also note from the data sheet that all tests are done with Tj at 25 Deg C and that the devices life expectancy is dramatically shortened if run hot.

The arrangement of the heatsync fins in relation to the fan seem a little unusual so I will next try to create a air reflector to reroute the air along the fins to see if I can improve the cover-on temperature.

Your feedback would be greatly appreciated.

TQ

Fri Mar 03, 2017 10:47 am

pcsSite master

Joined: 18 Jan 2002Posts: 3080Location: Radio Land

Hi there,

the temperature meter is not very accurate, think of it of an relative meter more than absolute. It shuts down things if they get too hot so the unit can cool down a little, but I wouldn't use it to predict weather